Weir Minerals Africa : Pumping innovation underpins GEHO success

The technical advancement of Weir Minerals’ GEHO® positive displacement pumps has ensured they play a key function in reducing mines’ environmental footprint.
The GEHO® pump range is well-known in varied pumping applications together with tailings, backfill, ore transportation and dewatering. Weir Minerals Global Product Manager for GEHO® positive displacement (PD) pumps, Erik Vlot, highlights the pumps’ capacity to pump extremely viscous slurry, allowing mines to preserve water. The vitality efficiency of pipeline transportation additionally helps minimize vitality costs and reduces mines’ carbon footprint.
“The basis of GEHO pumps’ success is our ongoing consideration to technical innovation and enchancment,” says Vlot. “This additionally allowed us to be pioneers within the pumping of very acidic material at excessive temperatures, similar to nickel slurry at greater than 200°C at a mine in Madagascar.”

With their high capacity, GEHO® pumps transport bauxite or iron ore over lots of of kilometres, offering one of the most value effective and sustainable transfer strategies out there to the mining business. These pumps have also performed an integral role within the success of a Weir Minerals paste resolution at Finland’s largest open pit mine. Yara’s Siilinjärvi mine makes use of GEHO® pumps to maneuver tailings from the plant, reaching the required beach slope on its tailings facility to satisfy its life-of-mine strategy.
Backfilling is a crucial method for mining to attain safety and environmental goals, and GEHO® pumps have been enabling this work. In a North American platinum operation, the equipment pumps over a thousand litres a minute of this viscous backfill materials – measuring 70% solids by weight – back into the mine’s labored out areas.
In the context of deep mines, GEHO® pumps present an environment friendly and dependable method of dewatering from great depths, as a substitute of utilizing a quantity of smaller pumps to switch water to floor. The highly effective GEHO® pump range can do that by pumping from the underside of a mine to the floor in only one raise – even over kilometres.
“Apart from the price effectiveness of this resolution, an important benefit is that it reduces the risk of one pump in a pumping chain failing, and disrupting the complete dewatering perform,” he says. “It also reduces the price and upkeep necessities of getting a quantity of pumping stations at completely different levels inside the mine.”

The status of GEHO® pumps has additionally been built on their reliability, he explains. This has resulted from Weir Minerals’ ongoing analysis and growth into its pumps’ wear parts. This course of is based on an in-depth understanding of the entire pumping system during which the pump operates.
“Taking into consideration how our pumps work together with these techniques, we focus on key aspects of the pumps such because the diaphragm and propelling liquid system,” he says. The propelling liquid provides the barrier between the piston and the diaphragm guaranteeing that every one the moving elements move in oil and not slurry.
He emphasises the importance of diaphragm dynamics and the necessity to control the volume of propelling liquid in the chamber. This is completed via the PLC control, to ensure that the diaphragm runs in the proper position.
“Rubber is nice at bending, but when it stretches it could tear,” he says. “Our purpose is to extend the replacement intervals between diaphragm replacements, helping mines to scale back each their downtime and their total price of possession.”

The monitoring of GEHO® pumps’ operation is carried out via digital technology in order that operators can stay abreast – in real time – of the pump’s performance and condition. Weir Minerals’ digital layer for these pumps is being rolled out to prospects, informing the maintenance schedules and enhancing pump availability.
Vlot notes that Weir Minerals continues to innovate with the GEHO® pump vary, and is even exploring potentialities for transferring coarse ore to the surface from deep in a mine – as a more cost effective choice to conventional hoisting methods.
pressure gauge to all our GEHO pump solutions is the Weir Minerals’ global service network, making certain that wherever our pumps are operating there shall be an skilled local service crew to help them,” he concludes.

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